參數(shù)資料
型號: ADV7311KST
廠商: Analog Devices Inc
文件頁數(shù): 28/84頁
文件大?。?/td> 0K
描述: IC VID ENC 6-12BIT DAC'S 64LQFP
產(chǎn)品變化通告: ADV7xxx Obsolescence 16/Jan/2012
標準包裝: 1
類型: 視頻編碼器
應用: DVD,SD/HD
電壓 - 電源,模擬: 2.5V
電壓 - 電源,數(shù)字: 2.5V
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應商設備封裝: 64-LQFP(14x14)
包裝: 托盤
REV. A
–34–
ADV7310/ADV7311
TIMING MODES
HD Async Timing Mode
[Subaddress 10h, Bit 3, 2]
For any input data that does not conform to the standards select-
able in input mode, Subaddress 10h, asynchronous timing mode
can be used to interface to the ADV7310/ADV7311. Timing control
signals for
HSYNC, VSYNC, and BLANK have to be programmed
by the user. Macrovision and programmable oversampling rates
are not available in async timing mode.
CLK
ACTIVE VIDEO
PROGRAMMABLE
INPUT TIMING
ANALOG
OUTPUT
81
66
243
1920
HORIZONTAL SYNC
e
d
c
b
a
P_HSYNC
P_VSYNC
P_BLANK
SET ADDRESS 10h,
BIT 6 TO 1
Figure 29a. Async Timing Mode—Programming Input Control Signals for SMPTE 295M Compatibility
ACTIVE VIDEO
0
1
HORIZONTAL SYNC
e
d
c
b
a
CLK
P_HSYNC
P_VSYNC
P_BLANK
SET ADDRESS 10h,
BIT 6 TO 1
ANALOG OUTPUT
Figure 29b. Async Timing Mode—Programming Input Control Signals for Bilevel Sync Signal
In async mode, the PLL must be turned off [Subaddress 00h,
Bit 1 = 1].
Figures 29a and 29b show examples of how to program the
ADV7310/ADV7311 to accept a different high definition standard
other than SMPTE 293M, SMPTE 274M, SMPTE 296M, or
ITU-R BT.1358.
The following truth table must be followed when programming the
control signals in async timing mode. For standards that do not
require a tri-sync level,
P_BLANK must be tied low at all times.
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